Polyvinyl Alcohol Processed Templated Polyaniline Films: Preparation, Characterization and Assessment of Tensile Strength

Polyaniline (PANI) is one of the most extensively studied material among the conducting polymers due to its simple synthesis by chemical and electrochemical routes. PANIs have advantages of chemical stability and high conductivity making their commercial applications quite attractive. However, to our knowledge, very little work has been reported on the tensile strength properties of templated PANIs processed with polyvinyl alcohol and also, detailed study has not been carried out. We have investigated the effect of small molecule and polymers as templates on PANI. Stable aqueous colloidal suspensions of trisodium citrate (TSC), poly(ethylenedioxythiophene)-polystyrene sulfonate (PEDOT-PSS), and polyethylene glycol (PEG) templated PANIs were prepared through chemical synthesis, processed with polyvinyl alcohol (PVA) and were fabricated into films by solution casting. Absorption and infra-red spectra were studied to gain insight into the possible molecular interactions. Surface morphology was studied through scanning electron microscope and optical microscope. Interestingly, tensile testing studies revealed least strain for pure PVA when compared to the blends of templated PANI. Furthermore, among the blends, TSC templated PANI possessed maximum elasticity. The ultimate tensile strength for PVA processed, PEG-templated PANI was found to be five times more than other blends considered in this study. We establish structure–property correlation with morphology, spectral characterization and tensile testing studies.

Authors:

• J. Subbalakshmi
• G. Dhruvasamhith
• S. M. Hussain

Keywords:

• Processed films
• polyvinyl alcohol
• spectroscopy
• surface morphology
• templated polyanilines
• tensile test.

References:

[1] D. C. Trivedi and H. S. Nalwa, “Handbook of Organic Conductive Molecules and Polymers,” vol. 2, pp. 509-511, London: John Wiley, 1997.
[2] J. Huang, S. Virji, B. H. Weiller and R. B. Kaner, “Polyaniline nanofibers: facile synthesis and chemical sensors,” J. Am. Chem. Soc. vol. 125, pp. 314-315, Jan. 2003.
[3] H. S. Abdulla and A. I. Abbo, “Optical and electrical properties of thin films of polyaniline and polypyrrole,” Int. J. Electrochem. Sci., vol. 7, pp. 10666-10678, Nov. 2012.
[4] J. C. Michaelson, A. J. McEvoy and N. Kuramoto, “Morphology and growth rate of polyaniline films modified by surfactants and polyelectrolytes,” React. Polym., vol. 17, no. 2, pp. 197-206, May 1992.
[5] C. W. Wang, Z. Wang, M. K. Li and H. L. Li, “Well-aligned polyaniline nano-fibril array membrane and its field emission property,” Chem. Phys. Lett., vol. 341, pp. 431-434, Jun. 2001.
[6] H. Karami, M. F. Mousavi and M. Shamsipur, “A novel dry dipolar rechargeable battery based on polyaniline,”J. Power Sourc., vol. 124, pp. 303-308, May 2003.
[7] H. Qui and M. Wan, “Synthesis, characterization, and electrical properties of nanostructural polyaniline doped with novel sulfonic acids (4-{n-[4(4-nitrophenylazo) phenyloxy]alkyl}aminobenzene sulfonic acid,” J. Polym. Sci. Part A: Poly. Chem., vol. 39, pp. 3485-3497, Aug. 2001.
[8] Z. Tian, H. Lu, L. Wang, M. Saleem, F. Ren, P. Ren, Y. Chen, R. Sun, Y. Sun and L. Huang, “Recent progress in the preparation of polyaniline nanostructures and their applications in anticorrosive coatings,” RSC Advances., vol 4, pp. 28195-28208, Jun. 2014.
[9] J. Laska, “Conformations of polyaniline in polymer blends”, J. Mol. Struc., vol. 701, pp. 13-18, May 2004.
[10] W. J. Bae, W. H. Jo and Y. H Park, “Preparation of polystyrene/polyaniline blends by in situ polymerization technique and their morphology and electrical property” Syn. Metals, vol. 132, pp. 239-244, Sep. 2002.
[11] C. Chen, J. C. La Rue, R. D. Nelson, L. Kulinsky and M. J. Madou, “Electrical conductivity of polymer blends of poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonate):N-methyl-2-pyrrolidinone and polyvinyl alcohol,” J. Appl. Poly. Sci., vol. 125, pp. 3134-3141, Aug. 2012.
[12] D. Li and R. B. Kaner, “Processable stabilizer-free polyaniline nanofiber aqueous colloids,” Chem. Commn., pp. 3286-3288, May 2005.
[13] L. F. Malmonge, S. C. Langiano, J. M. M. Cordeiro, L. H. C. Mattoso and J. A. Malmonge, “Thermal and mechanical properties of PVDF/PANI Blends,” Mat. Res., vol. 13, no. 4, pp. 465-470, Oct. 2010.
[14] J. Bhadra, N. J. Al-Thani, N. K. Madi and M. A. Al-Madeed, “Effects of aniline concentrations on the electrical and mechanical properties of polyaniline polyvinyl alcohol blends,” Arb. J. Chem.., http://dx.doi.org/10.1016/j.arabjc.2015.04.017, Apr. 2015.
[15] S. Akhilesan, C. Lakshmana Rao and S. Varughese, “Electromechanical behavior of Polyaniline/Poly(Vinyl alcohol) blend films under static, dynamic and time dependent strains,” Smart Mater. Struct., vol. 23, No. 7, pp. 1-11, Jun. 2014.
[16] A. V. Nand, S. Ray, J. Travas-Sejdic and P. A. Kilmartin, “Characterization of polyethylene terephthalate/polyaniline blends as potential antioxidant materials,” Materials Chemistry and Physics, vol.134, pp. 443-450, Sep. 2012.
[17] D. Jaaoh, C. Putson and N. Muensit, “Deformation on segment-structure of electrostrictive Polyurethane/Polyaniline blends,” Polymer, vol. 61, pp. 123-130, Mar. 2015.
[18] V. Giel, J. Kredatusova, M. Trchova, J. Brus, J. Jitka and J. Peter, “Polyaniline/Polybenzimidazole blends: Characterization of its physico-chemical properties and gas separation behavior,” European Polymer Journal., vol. 77, pp. 98-113, Apr. 2016.
[19] N. Cai, D. Hou, X. Luo, C. Han, J. Fu, H. Zeng and F. Yu, “Enhancing mechanical properties of polyelectrolyte complex nanofibers with graphene oxide nanofillers pretreated by polycation,” Composites Science and Technology, vol. 135, pp. 128-136, Oct. 2016.
[20] L. Sun and S. C. Yang, “Solution processable conducting polymer polyaniline-polyelectrolyte complexes,” Mat Res. Soc. Symp Proc., vol 328, pp. 209-214, 1994.
[21] Z. Zhang and M. Wan, “Composite Films of Nanostructured Polyaniline with Poly(vinyl alcohol),” Synth. Metals, vol. 128, pp. 83-89, Apr. 2002.
[22] A. Jyothi Lakshmi, K. Shantanu and S. Jayanty, “Synthesis and Characterization of Templated polyanilines: A new class of polymeric materials,” Chapter 14, Functionalized Engineering Materials and Their Applications, Apple Academic Press, CRC, Taylor and Francis Group, Nov. 2016. (In publication)
[23] R. Saxena, V. Shaktawat, N. Jain, N. S. Saxena, V. Sharma and T. P. Sharma, “Structural and thermal characterization of metal halide doped polypyrrole,” Ind. J. Pure App. Chem., vol. 46, pp.414-416, Jun. 2008.
[24] A. J. Epstein, J. M. Ginder, F. Zuo, R. W. Bigelow, H. S. Woo, D. B. Tanner, A. F. Ritcher, W. S. Huang and A. G. MacDiarmid, “Insulator-to-metal transition in polyaniline,” Synth. Met., vol. 18, pp. 303-309, Feb. 1987.
[25] G. Rupali, D. Amitabha and G. Goutam, “Polyaniline-Poly(vinyl alcohol) Conducting Composite: Material with Easy Processability and Novel Application Potential,” Synth. Metals, vol. 123, pp. 21-31. Aug. 2001.
[26] S. Jayanty, “Synthesis, conductivity and morphology study of polystyrenesulfonate templated tetrathiafulvalene polyionic polymers,” Applied Science and Advanced Materials International, vol. 1, no.2, pp. 56-59, Nov. 2014.
[27] S. Jayanty, “Carboxymethyl cellulose templated polyaniline: film morphology and conductivity,” International Journal of Energy, Sustainability and Environmental Engineering, vol.1 (4-5), pp. 123-127, May 2015.
[28] T. Nakamura and S. Jayanty, “Poly(4-styrenesulfonate) templated polyaniline-carboxymethyl cellulose blend: morphology and surface resistivity of the spin coated films,” Soft Materials, vol. 1, no. 4-5, pp. 309-315, Jul. 2016.